Might be wise to leave out specific names, your experience may have been bad but someone elses may have been ok.
look at their feedback on aquabid I'm Hardly the only one...also this is the same guy that kept dragon gobies in pure freshwater and claimed they'll do fine. I'd rather name names and prevent someone from having a crappy transaction then not saying anything at all and wait for the "GRRRR all my fish died from such and such place"